I have recently seen a rechargeable LED emergency bulb on Kickstarter and I was wondering how it is working.
In the event of a power failure, the LED bulb will turn ON automatically. That is, when the switch is ON and mains power goes off the bulb will detect that and turn ON. If the switch is OFF bulb will not turn ON. When mains are ON and the switch is ON the bulb will start recharging again.
It is just like a normal bulb. See the Youtube video
My question is, how the bulb will detect the event of mains failure? Can somebody give me a hint on this?
No comments:
Post a Comment